Fix build - USE_MINGW seems to be the preferred define

Change-Id: I57dd7f5029ed1fe3a74be7573a28fa894187b3a7
diff --git a/libs/host/CopyFile.c b/libs/host/CopyFile.c
index 98adcff..44c7c2b 100644
--- a/libs/host/CopyFile.c
+++ b/libs/host/CopyFile.c
@@ -69,7 +69,7 @@
  */
 static bool isHiresMtime(const struct stat* pSrcStat)
 {
-#ifdef WIN32_EXE
+#if defined(WIN32_EXE) || defined(USE_MINGW)
     return 0;
 #elif defined(MACOSX_RSRC)
     return pSrcStat->st_mtimespec.tv_nsec > 0;